Adjustable tool



(ModeL) A. A. PHASE.

ADJUSTABLE TOOL.

Patented Jan.'10,18 82 N. Prrzns, PhnloLdhcg -Ipher. Wauhinghm u. c.

, UNITED STATES" PATENT QFFICE.

ALBERT PEASE, OF SPRINGFIELD, MASSACHUSETTS.

ADJUSTABLE TOOL.

SPECIFICATION forming part of Letters Patent No. 252,248, dated January10, 1882. Application filed August 10,1881. (Model) .To all whom it mayconcern:

Be it known that I, ALBERT A. PEASE, of Springfie1d,-in the county ofHampden and State of Massachusetts, have invented new and usefulImprovements in Adjustable Tools, of which the following is aspecification, which will enable others skilled in the art to which theinvention appertains to make and use the same, reference being had tothe accompanying drawings and letters of reference marked thereon, whichform a part of this specification.

This invention relates to the construction of tools similar topipe-tongs, in which a changeable pivotal bearing is'desirable.

I am aware that tongs hax e heretofore been constructed with achangeable pivotal bearin g, or, in other words, so constructed that thejaws may be adjusted relatively to each other. These are objectionablebecause of its being necessary to draw the pivot and insert again eachtime the position of the pivotal bearing is changed, thus completelyseparating the parts. In a tool of this, construction much time is lostin adjusting the parts, and when worn they are liable to be separated byaccident and lost.

My invention consists in the construction herein shown, whereby I amenabled to change the position of the pivotal bearing without completelyseparating the parts, this being quickly and easily done, thus savingmuch time and trouble.

In the accompanying drawings, in which similar letters of referenceindicate like parts, Figure 1 is a side view of a small pair ofpipetongs with my invention applied thereto. Figs. 2 and 3 are front andrear views of'the I jaw B. Figs. 4 and 5 are front and rcar views of thejaw 0. Fig. 6 is a sectional view through line was of Fig. 2; and Fig.10 is a section of the same through line a a. Fig. 7 shows two sideviews of the pivot. Figs. 8 and 9 are views of the same, with a part insection. Fig. 11 is a view with jaws in section on line it n, Fig. 1;and Fig. 12 is a view of the same with the jaws separated preparatorytoch an gin gthe position of the bearing.

The construction will be readily undlerstood on reference to thedrawings.

The jaw B has two or more recesses, a" 6 in which the part 0 of thepivot D fits. The jaw 0 may have one or more holes, 1'. These, however,will be in no way connected with each other.

The pivot is recessed, as shown in Figs. 8 and 9. The head of the bolt tfits within and should nearly fill the recess. A spiral spring bearsagainst the head of the bolt t and rests against the bottom ofthe-recess, as shown. The not 1) screws upon the bolt t. Fig. 8illustrates the position of the parts of the pivot when the jaws of thetool are together, as seen in Fig. 11, while Fig. 9 illustrates theposition of the parts when the jaws are separated preparatory tochanging the position of pivotal bearing, as seen in Fig. 12.

It will be seen that when thejaws are separated the spring iscom-pressed and the bolt t and nut b move upward sufficiently to allowthe part c to escape from the recess 6 as shown in Fig.12. Thejaw'B isnow moved to the right, the bolt t traversing the slot 0 until the partc enters the recess 6, thus separating the griping-jaws of the tool andallowing of the grasping of a larger object.

To overcome the tendency of the jaws to separate when under strain, thepart c of the pivot is inclined, and the sides of the recesses againstwhich the part c bears are correspondingly shaped. Thus constructed thetendency under strain is to draw the jaws more closely together.

It will be seen that this invention may he applied to other tools inwhich it is desir' ble to change the pivotal bearing.

The pivot D is provided with the usual head, h. Thejaws B and 0, nearthejunction of the axis, are formed with beveled or inclined surfaces o,which may form cutters or means for grooving pipes.

Having therefore described my invention, what I claim, and desire tosecure by Letters Patent, is--,-

1. The combination of the jaw 0, having a handle and hole or aperture,1', the jaw 13, having a handle and recesses t" and 2' with slot 0,

and the recessed pivot I), with inclined bean.

ing e, boltt, spring, and nut, substantially as described, and for thepurpose set forth.

2. In a tool, the pivot D, consisting of the pivotal part having theportions hf, inclined bearing e, and recess, the headed bolt having thenut b, and a spiral spring to draw the pivotal part and bolt together,substantially as 10

